EP2993267B1 - Verschalungssystem, das eine perfektionierte dehnungsfuge umfasst - Google Patents

Verschalungssystem, das eine perfektionierte dehnungsfuge umfasst Download PDF

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Publication number
EP2993267B1
EP2993267B1 EP15183501.4A EP15183501A EP2993267B1 EP 2993267 B1 EP2993267 B1 EP 2993267B1 EP 15183501 A EP15183501 A EP 15183501A EP 2993267 B1 EP2993267 B1 EP 2993267B1
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EP
European Patent Office
Prior art keywords
longitudinal
concrete
sinusoidal
formwork system
vertical
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EP15183501.4A
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English (en)
French (fr)
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EP2993267A1 (de
Inventor
Arnaud De Rivas
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SIFLOOR
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Sifloor
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/08—Packing of metal
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/12—Packing of metal and plastic or elastic materials
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/14—Dowel assembly ; Design or construction of reinforcements in the area of joints

Definitions

  • the present invention relates to the technical field of concrete slab formwork systems providing an expansion joint between two adjacent slabs.
  • the present invention relates more particularly to a formwork system comprising an improved expansion joint.
  • These plates are interconnected by bolting means and can be spaced horizontally from each other to take into account the shrinkage of concrete in the solidification phase and external temperature variations.
  • the space between the plates allows the positioning of expansion joints.
  • Such a formwork system is described in particular in the European patent application EP 1 391 556 .
  • This document describes a device for establishing a connection between two adjacent concrete slabs by equipping the expansion joint located between said slabs.
  • the device consists of an assembly of two modules from sheets, each of the modules comprising a first series of flat elements, which form projections, a second series of square elements, integral with said projections.
  • the angled elements comprise a first flat portion which is in the same plane as said projections, and a second raised flat portion which forms a square with said first portion, and flat elements which are in the same plane as said raised portions forming connections in the form of first spars between said raised portions.
  • the assembly is carried out by mounting the two modules, so that the raised parts of the elements of the second series and the elements forming the longitudinal members face each other, lying on both sides of a median plane, and so that the projections of each module extend on either side of said median plane.
  • the document is also known EP 1 389 648 which describes a device for forming the edge of a concrete slab.
  • the apparatus comprises a separator plate formed with a plurality of apertures, studs for penetrating the apertures, sleeves for application to the studs, and a device for adjusting the height of the apparatus during use. above the ground.
  • the separator plate comprises at its upper end, a first linear rail integral with said separator plate, and a second linear rail secured to the first rail by screws and plastic nuts.
  • Each rail comprises anchoring devices intended to be incorporated in the concrete.
  • each profiled element is designed to be integral with one of the edges of two adjacent plates, and comprises a substantially vertical rod adapted to extend at least partially along the edges to a sharp edge of a upper surface of the plate.
  • the upper edge of each vertical rod of the profiled elements of two adjacent plates, as observed along the line between the two adjacent plates, is composed of non-linear elements, in particular sinusoidal elements.
  • the wheel of a forklift or other means of transport having wheels does not tendency to fall between the two adjacent plates of the joint. Said wheel therefore no longer strikes said plates when passing over the joint, but will always be supported by the surface of one of the adjacent slabs. This characteristic makes it possible to limit the shocks and, ultimately, the wear of the concrete slabs in the vicinity of the expansion joints.
  • this type of seal has the disadvantage of not providing a distribution of stresses throughout the thickness of the pavement.
  • the nonlinear plates, in this case sinusoidal, forming the joints are respectively integral with a support plate having a U-shaped upper profile. Each sinusoidal plate is secured to the upper branch of the U, and the two plates. in the shape of a U are embedded one in the other.
  • concrete of a first concrete slab extends above the second adjacent concrete slab and concrete of the second concrete slab extends above the first concrete slab so that the stresses, near the joint, are not uniform, showing in the course of time disorders in the concrete near the joint of dilatation.
  • the concrete does not work on its full height to take the constraints applied to it.
  • One of the aims of the invention is therefore to remedy these drawbacks by proposing a concrete slab formwork system comprising an improved expansion joint, of simple and inexpensive design, making it possible to avoid the appearance of disorders in the concrete. paving close to the joint during repeated passages on said joint, while providing a uniform distribution of stresses in the concrete, on both sides of the expansion joint.
  • the sinusoidal profile of the expansion joint ensures continuity in the separation between two concrete slabs, and that over its entire height.
  • the wheel of a vehicle is always supported by the surface of one of the adjacent slabs. This characteristic makes it possible to limit the shocks and, ultimately, the wear of the concrete slabs in the vicinity of the expansion joints.
  • the characteristic that the external sinusoidal profiles of each sinusoidal element do not cross the longitudinal plane defined by the separating element makes it possible to avoid the disorders in the concrete at the level of the expansion joint. Indeed, when pouring concrete on either side of the joint, the concrete of the first slab remains on one side of the plane defined by the vertical separating element and does not extend above the second adjacent concrete slab. It is the same for the second concrete slab. Thus, the stresses in the concrete near the joint are uniformly distributed over the entire thickness of the pavement, which very clearly reduces the appearance of disorders, such as cracks or breaks.
  • the width of each sinusoidal element is greater than or equal to, and preferably equal to twice the amplitude of its sinusoidal profile.
  • first sinusoidal element integral with the vertical separation element.
  • said first sinusoidal element is welded directly to the separating element, or is welded to an intermediate part itself welded to the separating element.
  • the intermediate piece is, for example, in the form of a square, or in the form of a parallelepipedal part, welded, on the one hand, to the first sinusoidal element and, on the other hand, to the element of seperation.
  • the fixing means are in the form of two hollow cylinders, arranged coaxially with respect to each other, and held against each other by a through plastic screw the two cylinders and a counter nut.
  • the two cylinders are each made integral with a sinusoidal element while being both positioned perpendicular to said sinusoidal elements, and engaged through an opening in the separating element.
  • the fixing means comprise intermediate pieces made integral with the second sinusoidal element, and fixed to the separating element by means of plastic screws and nuts, the screws being intended to break under the retraction effort of at least one concrete slab.
  • the parts made integral with the second sinusoidal element may be in the form of brackets, or parallelepipedal parts, on the one hand welded to the second sinusoidal element and, on the other hand fixed to the element separation by means of plastic screws and nuts.
  • the expansion joint has a free bearing surface of a lifting means at the lower face of the first sinusoidal element. This feature makes it possible to raise or lower said expansion joint via the lifting means to ensure the adaptability of said form system to the thickness of concrete slabs to form.
  • the invention relates to a formwork system (D) of concrete slabs used when it is necessary, for the pouring of concrete, to divide the concrete slab into several parts, depending on its area and its thickness, to create a concrete space. air necessary for the absorption of the variations of volumes of a slab, for example under the action of the withdrawal.
  • D formwork system
  • the formwork system (D) uses at least one vertical separating element (5) of two adjacent concrete slabs in the form of a metal plate (5).
  • the concrete slab formwork system with expansion joints is referenced by (D). It comprises a large length two support bases (1, 2) profiled horizontal and each arranged with a plurality of projecting shapes (1a, 2a) and cutouts (1b, 2b) capable of entangling by embedding. These support bases are illustrated in particular in figure 1 . They receive in a known manner rods (3) arranged obliquely and constituting means for taking concrete.
  • the first horizontal support base (1) receives on its apparent face a plurality of first pairs of brackets (4a, 4b) spaced along the length of the support base (1).
  • the brackets (4a, 4b) of the same pair are spaced apart from each other substantially.
  • the number of pairs of brackets (4a, 4b) depends on the length of the formwork. For purposes of simplification of the figures, only a portion of the formwork system (D) comprising a pair of brackets (4a, 4b) has been shown in the figures.
  • Their attachment to the support base (1) is carried out by any appropriate technique, preferably by welding.
  • the pairs of brackets (4a, 4b) are connected by the free end of their vertical branches via a connecting arm (4d).
  • said pairs of brackets (4a, 4b) allow the fixing of the vertical plate (5) metal, preferably made of thin sheet, for example 2 mm thick.
  • This vertical plate (5) is intended to achieve a vertical separation between two adjacent concrete slabs during formwork.
  • the connecting arm (4d) connecting each pair of brackets (4a, 4b) has an opening (4c) for the insertion of bolting (6) as specified below.
  • the vertical plate (5) is thus arranged with a plurality of oblong slots (5a), vertical, in number corresponding to the number of pairs of brackets (4a, 4b) above.
  • the upper part of the plate (5) is made integral with a first longitudinal sinusoidal element (10a) and a second longitudinal sinusoidal element (10b), hereinafter called “sinusoidal element” to form an expansion joint such that it will be specified later in the description.
  • the second support base (2) is also arranged for receiving second pairs of brackets (8a) (8b) whose free ends of their vertical branches are also connected via a link arm (8d).
  • the second pairs of brackets (8a) (8b) are intended to be in opposition to said first pairs of brackets (4a, 4b). They are attached to the second support base (2) by any suitable technique, preferably by welding.
  • the second pairs of brackets (8a, 8b) allow the attachment of a vertical plate (9), metal, sheet metal for example, a thickness substantially similar to that of the vertical plate (5) .
  • the second pairs of brackets (8a) (8b), and more particularly the connecting arm (8d), and the counterplate (9) are also arranged with circular openings (8c) (9a) for the passage and the introduction. bolting means (6) and blocking above.
  • the plate (5) can be adjusted vertically in height relative to the counterplate (9) which is fixed.
  • the adjustment in height according to the needs is carried out by means of the various oblong slots (5a) which thus allow the passage of the bolting (6).
  • the length of the oblong slots thus defines the possible height of adjustment between the plate (5) and the counterplate (9).
  • the dimension of the plate (5) is therefore established relative to the height of the counterplate (9).
  • the plate (5) can be positioned at a constant horizontal height relative to the counter plate (9), or in inclination according to a slight angulation which is authorized precisely by said lights (5a).
  • this plate (5) has a horizontal support plane (5b) on which is secured in a fixed manner, by any appropriate means, and preferably by welding, the first sinusoidal element (10a ).
  • the first sinusoidal element (10a) is disposed over the entire length of the plate (5) so as to form a horizontal bearing plane, and is coupled with the second identical sinusoidal element (10b). More specifically, the sinusoidal elements (10a, 10b), with the vertical plate (5), form the expansion joint as such.
  • the vertical plate (5) extends orthogonally from the underside of the first sinusoidal element (10a).
  • the two sinusoidal elements (10, 10b) are contiguous to each other so as to engage ridges of the first sinusoidal element (10a) with recesses of the second sinusoidal element (10b).
  • Each sinusoidal element (10a, 10b) is intended to form integral part with an upper and horizontal edge of a concrete slab.
  • the sinusoidal elements (10a, 10b) comprise widths defined to define external sinusoidal profiles each intended to be in contact with a concrete slab, and internal sinusoidal profiles in contact with each other.
  • Each sinusoidal element (10a, 10b) comprises rods (11) projecting from a lower face, obliquely, and in opposite direction facing outwardly to constitute concrete catch means, thus arranged to ensure a balancing.
  • the second sinusoidal element (10b) comprises fastening means (12) to said vertical plate (5). More specifically, these fastening means (12) comprise square pieces (12a), first welded to said second sinusoidal element (10b) and secondly fixed in the vertical plate (5) by means of screws. plastic (12b) and nuts (12c). The plastic screws (12b) are intended to break under the retraction force of at least one concrete slab.
  • the sinusoidal elements (10a, 10b) are designed so that their amplitudes and their widths allow the vertical plate (5) to be joined to the first sinusoidal element (10a) so that the external sinusoidal profiles of the sinusoidal elements (10a) , 10b) do not cross the longitudinal plane defined by the vertical partition plate (5).
  • each sinusoidal element (10a, 10b) is greater than or equal to, and preferably equal to twice the amplitude of its sinusoidal profile.
  • the bolting (6) used, as well as the screws (12a) are made of nylon or plastic so that when the concrete retracts horizontally, said screws (12a) are broken and the two sinusoidal elements, as well as the plate (5) and the plywood (9) move away from each other.
  • the first sinusoidal element (10a) remains on the plate (5) and engaged with the upper horizontal stop of the concrete slab, and the second sinusoidal element (10b) remains engaged with the upper horizontal edge of the other adjacent concrete slab.
  • the sinusoidal profile of the expansion joint ensures continuity in the separation between two concrete slabs.
  • a wheel of a vehicle traveling on the pavement and passing from one slab to the other is always supported by the surface of one of the adjacent slabs. This characteristic makes it possible to limit the shocks and, ultimately, the wear of the concrete slabs in the vicinity of the expansion joints.
  • each sinusoidal element (10a, 10b) do not pass through the longitudinal plane defined by the vertical separation plate (5) makes it possible to avoid the disorders in the concrete at the level of the gasket. expansion. Indeed, when pouring concrete on either side of the joint, the concrete of the first slab remains on one side of the plane defined by the vertical plate (5) and does not extend above the second adjacent concrete slab. It is the same for the second concrete slab. Thus, the stresses in the concrete near the joint are uniformly distributed over the entire thickness of the pavement, which very clearly reduces the appearance of disorders, such as cracks or breaks.
  • the fastening elements (12) are in the form of two hollow cylinders, arranged coaxially with one another, and maintained one against the other by a plastic screw through the two cylinders and a locknut.
  • the two cylinders are each made integral with a sinusoidal element (10a, 10b) while being both positioned perpendicular to said sinusoidal elements (10a, 10b) and engaged through an opening in the separating element (5).
  • the support plane (5b) of the vertical plate (5) is established on only a part of the width of the sinusoidal element (10a) leaving free for it a support zone of a means elevator known in the state of the art and in particular disclosed in the international patent application WO 2013/072619 .
  • the elevator means comprises means capable of coming into lower contact with the base of the first sinusoidal element (10a) of the expansion joint. After loosening the bolting means (6), it is thus possible for the operator to raise or lower the vertical plate (5) relative to the counterplate (9), thereby increasing the height of the locking system. formwork (D) thus formed.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Bridges Or Land Bridges (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Claims (7)

  1. Schalungssystem (D) von Betonplatten mit mindestens einer ersten und zweiten horizontalen Grundplatte (1, 2), die profiliert und mit einer Mehrzahl von Vor- (1a, 2a) und Rücksprüngen (1b, 2b) ausgebildet sind und durch Einpassen verblockt werden können, Stangen (3), die von den horizontalen Grundplatten aufgenommenen werden und Mittel zum Abbinden des Betons bilden, einer Dehnungsfuge, einem senkrechten Trennelement (5) der Dehnungsfuge, ersten Winkelpaaren (4a, 4b), die mit der ersten Grundplatte (1) fest verbunden sind und einen senkrechten Schenkel aufweisen, welcher eine höhenverstellbare Befestigung des senkrechten Trennelements (5) zulässt, einer feststehenden senkrechten Gegenplatte (9), zweiten Winkelpaaren (8a, 8b), die mit der zweiten Grundplatte (2) fest verbunden und gegenüber von den ersten Winkelpaaren (4a, 4b) angeordnet sind und die Befestigung der senkrechten Gegenplatte (9) zulassen, und einer Verschraubung (6), wobei das senkrechte Trennelement (5) der Dichtungsfuge senkrechte Langlöcher (5a) aufweist, die sich über einen Teil seiner Höhe erstrecken, und wobei die Gegenplatte (9) und die ersten und zweiten Winkelpaare (4a, 4b) (8a, 8b) Löcher (9a) (4c) (8c) aufweisen, die die Einbindung der Verschraubung (6) zur Einstellung und Befestigung des Trennelements (5) bezogen auf die Gegenplatte (9) ermöglichen, dadurch gekennzeichnet, dass die Dehnungsfuge in Form eines ersten Längsteils (10a) und eines zweiten Längsteils (10b) mit identischen sinusförmigen Profilen vorliegt, die so aneinander liegen, dass die Ausbuchtungen des ersten Längsteils (10a) in die Einbuchtungen des zweiten Längsteils (10b) eingreifen, wobei jedes Längsteil (10a, 10b) ein integrales Teil einer waagerechten Oberkante einer Betonplatte bilden soll und die Längsteile (10a, 10b) festgelegte Breiten aufweisen, so dass sinusförmige Aussenprofile gebildet werden, die jeweils eine Betonplatte berühren sollen, und sinusförmige Innenprofile, die sich gegenseitig berühren, wobei die Längsteile (10a, 10b) Stäbe (11) umfassen, die an einer Unterseite hervorstehen und entgegengesetzt nach außen gerichtet sind, um Mittel zum Abbinden von Beton zu bilden, wobei die Unterseite des ersten Längsteils (10a) unmittelbar an das Trennelement (5) angeschweißt ist, welches über seine ganze Länge ausgebildet ist und sich rechtwinklig zur Unterseite erstreckt, und dazu dient, eine senkrechte Trennfuge zwischen zwei nebeneinander liegenden Betonplatten zu bilden, wobei das zweite Längsteil (10b) mit Befestigungsmitteln (12), welche befähigt sind, unter Einwirkung einer waagerechten Schrumpfungskraft von mindestens einer Betonplatte zu brechen, mit dem Trennelement (5) oder dem ersten Längsteil (10a) verbunden ist, so dass sich die beiden Längsteile (10a, 10b) voneinander weg bewegen und das erste Längsteil (10a) mit dem Trennelement (5) fest verbunden bleibt, wobei die Amplituden und Breiten der Längsteile (10a, 10b) derart sind, dass die sinusförmigen Außenprofile der Längsteile (10a, 10b) eine durch das Trennelement (5) definierte Längsebene nicht durchqueren.
  2. Schalungssystem (D) nach Anspruch 1, dadurch gekennzeichnet, dass die Breite jedes Längsteils (10a, 10b) größer oder gleich der Amplitude seines sinusförmigen Profils ist.
  3. Schalungssystem (D) nach Anspruch 2, dadurch gekennzeichnet, dass die Breite jedes Längsteils (10a, 10b) doppelt so groß wie die Amplitude seines sinusförmigen Profils ist.
  4. Schalungssystem (D) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Befestigungsmittel (12) als zwei Hohlzylinder ausgeführt sind, die in Bezug aufeinander gleichachsig angeordnet sind und über eine die beiden Zylinder durchquerende Kunststoffschraube und eine Gegenmutter aneinander gehalten sind, wobei jeder der beiden Zylinder mit einem Längsteil (10a, 10b) fest verbunden ist, indem beide senkrecht zu den Längsteilen (10a, 10b) positioniert sind und über eine im Trennelement (5) ausgebildete Öffnung in Eingriff stehen.
  5. Schalungssystem (D) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Befestigungsmittel (12) fest mit dem zweiten Längsteil (10b) verbundene Zwischenstücke (12a) umfassen, welche mit Kunststoffschrauben (12b) und Muttern (12c) am Trennelement (5) befestigt sind.
  6. Schalungssystem (D) nach Anspruch 5, dadurch gekennzeichnet, dass die fest mit dem zweiten Längsteil (10b) verbundenen Zwischenstücke in Form von Winkeln (12a) oder quaderförmigen Teilen vorliegen, die auf der einen Seite an das zweite Längsteil (10b) angeschweißt und auf der anderen Seite mit Kunststoffschrauben (12b) und Muttern (12c) im Trennelement (5) fixiert sind.
  7. Schalungssystem (D) nach einem der vorhergehenden Ansprüche dadurch gekennzeichnet, das das System an der Unterseite des ersten Längsteils (10a) eine freie Fläche zur Auflage eines Hebemittels aufweist.
EP15183501.4A 2014-09-05 2015-09-02 Verschalungssystem, das eine perfektionierte dehnungsfuge umfasst Active EP2993267B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1458355A FR3025540B1 (fr) 2014-09-05 2014-09-05 Joint de dilatation pour systeme de coffrage de dalles beton, et systeme de coffrage comprenant un tel joint de dilatation.

Publications (2)

Publication Number Publication Date
EP2993267A1 EP2993267A1 (de) 2016-03-09
EP2993267B1 true EP2993267B1 (de) 2017-06-14

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EP (1) EP2993267B1 (de)
ES (1) ES2634710T3 (de)
FR (1) FR3025540B1 (de)
PT (1) PT2993267T (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10851501B2 (en) * 2017-05-23 2020-12-01 Lynks Easily renovated expansion joint for a concrete slab formwork system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2018226392A1 (en) * 2017-10-13 2019-05-02 Illinois Tool Works Inc. Edge protection system having dowel plate
CO2019002573A1 (es) * 2019-03-19 2019-06-19 Com De Productos Para Pisos Ltda Copropisos Ltda Junta de transferencia de carga para placas de concreto

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
EP1783277A1 (de) 2002-08-16 2007-05-09 Permaban Limited Betonbodenplatte
EP1391556A1 (de) 2002-08-21 2004-02-25 Plakabeton Coffratec S.C.A. Vorrichtung zum Bestücken von Dehnungsfugen, insbesondere Dehnungsfugen zwischen Betonplatten
EP2930269B1 (de) 2006-06-12 2019-02-27 Hengelhoef Concrete Joints NV Strukturelle verbindung
PT2594693E (pt) * 2011-11-17 2015-02-06 Sifloor Dispositivo de regulação da altura de uma cofragem para lajes de betão
DE202012104788U1 (de) * 2012-12-10 2013-01-04 HSD Industriebeläge GmbH Schalungselement für den Fußbodenbau

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10851501B2 (en) * 2017-05-23 2020-12-01 Lynks Easily renovated expansion joint for a concrete slab formwork system

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EP2993267A1 (de) 2016-03-09
ES2634710T3 (es) 2017-09-28
FR3025540B1 (fr) 2017-11-03
FR3025540A1 (fr) 2016-03-11
PT2993267T (pt) 2017-07-12

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